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Finding the Fourth Proportional to 68,396.09, 102,569.51 and 28,955.97

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Solution

The fourth proportional to 68,396.09, 102,569.51 and 28,955.97 is: 43,423.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,396.09 : 102,569.51 = 28,955.97 : x
  2. Step 2: Convert to fraction form
    68,396.09/102,569.51 = 28,955.97/x
  3. Step 3: Cross multiply
    68,396.09x = 102,569.51 × 28,955.97
  4. Step 4: Simplify right side
    68,396.09x = 2,969,999,509.69
  5. Step 5: Solve for x
    x = 2,969,999,509.69/68,396.09
  6. Step 6: Final answer
    x = 43,423.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.